Photoluminescence enhancement and quenching of single CdSe∕ZnS nanocrystals on metal surfaces dominated by plasmon resonant energy transfer

Photoluminescence enhancement and quenching of single CdSe∕ZnS nanocrystals on metal surfaces dominated by plasmon resonant energy transfer

We studied the mechanism of the photoluminescence (PL) enhancement and quenching of single CdSe∕ZnS nanocrystals on rough Au surfaces. Single nanocrystal spectroscopy revealed that the PL enhancement depends strongly on the excitation wavelength and liner-polarization angle due to the localized plas...

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Veröffentlicht in:Applied physics letters 2008-05, Vol.92 (21)
Hauptverfasser: Matsuda, Kazunari, Ito, Yuichi, Kanemitsu, Yoshihiko
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container_title Applied physics letters
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Ito, Yuichi
Kanemitsu, Yoshihiko
description We studied the mechanism of the photoluminescence (PL) enhancement and quenching of single CdSe∕ZnS nanocrystals on rough Au surfaces. Single nanocrystal spectroscopy revealed that the PL enhancement depends strongly on the excitation wavelength and liner-polarization angle due to the localized plasmon excitation and is also sensitive to the nanocrystal size. The polarization- and size-dependent PL enhancement and quenching are determined by the balance between the resonant energy transfer from the nanocrystal to the Au surface and the electric field enhancement.
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Single nanocrystal spectroscopy revealed that the PL enhancement depends strongly on the excitation wavelength and liner-polarization angle due to the localized plasmon excitation and is also sensitive to the nanocrystal size. The polarization- and size-dependent PL enhancement and quenching are determined by the balance between the resonant energy transfer from the nanocrystal to the Au surface and the electric field enhancement.</abstract><doi>10.1063/1.2937142</doi><oa>free_for_read</oa></addata></record>
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title Photoluminescence enhancement and quenching of single CdSe∕ZnS nanocrystals on metal surfaces dominated by plasmon resonant energy transfer
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